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Standards GB are Chinese national standards, which are issued by China's Standardization Administration Office (SAC).
Chinese national standards are used all over China commonly labeled as GB standards. They determine the united production requirements regarding product safety and quality .
GB standards are often modified or created according to the international standards of ISO, IEC or any other international level.
Although, they are largely harmonized, GB standards may differ from international standards .
Approximately 15% of all GB standards are obligatory and they can be identified according to the prefix GB, after which the code of the standards follows:
GB – Obligatory national standards
GB/T – Optional national standards
GB/Z – National steering technical document
Organic geochemical measurements of geological samples—Method for the analysis of the organic matters for stable carbon isotopic composition
WITHDRAWN published on 19.3.2001
Selected format:Organic geochemical measurements of geological samples—Method for hydrocarbon types analysis of gas-oil saturates fractions by mass spectrometry
WITHDRAWN published on 19.3.2001
Selected format:Organic geochemical measurements of geological samples—Method for aromatic types analysis of gas-oils aromatic fractions by mass spectrometry
WITHDRAWN published on 19.3.2001
Selected format:Organic geochemical measurements of geological samples—Method for the analysis of saturated hydrocarbons of soluble organic matter in rocks and the crude oils by gas chromatography
WITHDRAWN published on 19.3.2001
Selected format:Organic geochemical measurements of geological samples—Method for hydrocarbon types analysis of gasoline by mass spectrometry
WITHDRAWN published on 19.3.2001
Selected format:Specifications of survey for geological and mineral resources exploration
WITHDRAWN published on 19.3.2001
Selected format:Specifications of coal for chain and traveling grate stoker boiler
WITHDRAWN published on 19.3.2001
Selected format:Specifications of coal for chain and travelling grate stoker boiler
WITHDRAWN published on 11.3.2009
Selected format:Specification for automobile disk brakes being overhauled
WITHDRAWN published on 26.3.2001
Selected format:Specification for the inspection and maintenance of motor vehicle
WITHDRAWN published on 26.3.2001
Selected format:Latest update: 2025-12-26 (Number of items: 2 253 153)
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